Home / 124,878.12-187,090.38-72,176.28

Finding the Fourth Proportional to 124,878.12, 187,090.38 and 72,176.28

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Solution

The fourth proportional to 124,878.12, 187,090.38 and 72,176.28 is: 108,133.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,878.12 : 187,090.38 = 72,176.28 : x
  2. Step 2: Convert to fraction form
    124,878.12/187,090.38 = 72,176.28/x
  3. Step 3: Cross multiply
    124,878.12x = 187,090.38 × 72,176.28
  4. Step 4: Simplify right side
    124,878.12x = 13,503,487,652.19
  5. Step 5: Solve for x
    x = 13,503,487,652.19/124,878.12
  6. Step 6: Final answer
    x = 108,133.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.